House with Kensa heat pump

Llanishen House, overlooking the Usk Valley in picturesque Monmouthshire, was formerly the site of an old inn, parts of which date back some 600 years. Its owner Richard Waterstone has carried out a full renovation of the main building to create a modern and spacious family home with heating and hot water provided by one of our ground source heat pumps. Also a project to convert the old granary building into a luxury 3-4 bedroom property for which he is using a second Kensa ground source heat pump.

The original building was part Medieval and part Victorian with some solid sandstone walls, and prior to the refurbishment project it was cold and draughty. Richard converted it to high specification incorporating modern features with traditional styling in keeping with the property’s history. He included double glazed windows and wall insulation to reduce heat losses.


Llanishen House is a large 500+m² property; Richard’s refurbishment having incorporated an internal courtyard into the building. Therefore the demand for heat was high – ideally suited to the Kensa Twin Compact heat pump which is fitted with two internal compressors. The heat pump unit is housed in the spacious cellar. Richard enjoys taking people down to show them the high tech kit!


“Throughout the project I had lots of help from Kensa and was very pleased with the service I received.”

“I love the technology – the idea of harnessing free heat from the ground is so simple and Kensa’s kit is top of the range.”

Key Facts:

  • Part Medieval, part Victorian and part new-build
  • Renovated inn and granary building
  • 24kW Twin in main house supplied by 300m of slinky pipes
  • 9kW Evo in granary supplied by two 200m boreholes
  • Both systems eligible for the Renewable Heat Incentive (RHI)


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